Masatoshi Tokushima

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Photodetector having one-dimensional grating structure
- Patent number 10,535,786
- Issue date Jan 14, 2020
- PHOTONICS ELECTRONICS TECHNOLOGY RESEARCH ASSOCIATION
- Kenichiro Yashiki
- G02 - OPTICS
Information Patent Grant
Optical measurement element for alignment in wafer-level testing an...
- Patent number 10,088,299
- Issue date Oct 2, 2018
- NEC Corporation
- Masatoshi Tokushima
- G01 - MEASURING TESTING
Information Patent Grant
Grating structure, and manufacturing method of grating coupler prov...
- Patent number 10,025,031
- Issue date Jul 17, 2018
- PHOTONICS ELECTRONICS TECHNOLOGY RESEARCH ASSOCIATION
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Grant
Optical circuit
- Patent number 9,519,115
- Issue date Dec 13, 2016
- PHOTONICS ELECTRONICS TECHNOLOGY RESEARCH ASSOCIATION
- Kenichiro Yashiki
- G02 - OPTICS
Information Patent Grant
Optical conversion element and optical conversion element manufactu...
- Patent number 8,873,906
- Issue date Oct 28, 2014
- NEC Corporation
- Masatoshi Tokushima
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Wavelength filter
- Patent number 8,705,920
- Issue date Apr 22, 2014
- NEC Corporation
- Masatoshi Tokushima
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical control device
- Patent number 8,600,204
- Issue date Dec 3, 2013
- NEC Corporation
- Masatoshi Tokushima
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical switch
- Patent number 8,554,027
- Issue date Oct 8, 2013
- NEC Corporation
- Masatoshi Tokushima
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical switch and manufacturing method thereof
- Patent number 8,478,088
- Issue date Jul 2, 2013
- NEC Corporation
- Masatoshi Tokushima
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical waveguide
- Patent number 8,355,614
- Issue date Jan 15, 2013
- NEC Corporation
- Masatoshi Tokushima
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Photonic crystal element
- Patent number 8,355,611
- Issue date Jan 15, 2013
- NEC Corporation
- Masatoshi Tokushima
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical control device
- Patent number 8,208,776
- Issue date Jun 26, 2012
- NEC Corporation
- Masatoshi Tokushima
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical converter
- Patent number 8,170,383
- Issue date May 1, 2012
- NEC Corporation
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Grant
Polarization rotator and method for manufacturing the same
- Patent number 8,094,978
- Issue date Jan 10, 2012
- NEC Corporation
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Grant
Waveguide coupling structure
- Patent number 8,027,556
- Issue date Sep 27, 2011
- NEC Corporation
- Masatoshi Tokushima
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical switch having photonic crystal structure
- Patent number 7,263,251
- Issue date Aug 28, 2007
- NEC Corporation
- Masayuki Shirane
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Structure of photonic crystal
- Patent number 7,158,711
- Issue date Jan 2, 2007
- NEC Corporation
- Masatoshi Tokushima
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Microchip, method of manufacturing microchip, and method of detecti...
- Patent number 7,058,244
- Issue date Jun 6, 2006
- NEC Corporation
- Kazuhiro Iida
- G01 - MEASURING TESTING
Information Patent Grant
Optical switch having photonic crystal structure
- Patent number 6,937,781
- Issue date Aug 30, 2005
- NEC Corporation
- Masayuki Shirane
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Waveguide comprising a connection of a photonic-crystal line-defect...
- Patent number 6,795,621
- Issue date Sep 21, 2004
- NEC Corporation
- Masatoshi Tokushima
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Optical wavelength-demultiplexer with an improved optical lens
- Patent number 6,621,644
- Issue date Sep 16, 2003
- NEC Corporation
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Grant
Method of exposing a lattice pattern onto a photo-resist film
- Patent number 6,558,881
- Issue date May 6, 2003
- NEC Corporation
- Masatoshi Tokushima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photonic crystal and its fabrication
- Patent number 6,466,360
- Issue date Oct 15, 2002
- NEC Corporation
- Masatoshi Tokushima
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Photonic crystal
- Patent number 6,366,392
- Issue date Apr 2, 2002
- NEC Corporation
- Masatoshi Tokushima
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Apparatus for making exhaust gas non-toxic
- Patent number 6,315,819
- Issue date Nov 13, 2001
- NEC Corporation
- Masatoshi Tokushima
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method of dry etching and apparatus for making exhaust gas non-toxic
- Patent number 6,156,666
- Issue date Dec 5, 2000
- NEC Corporation
- Masatoshi Tokushima
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Metal-semiconductor junction fet
- Patent number 6,084,258
- Issue date Jul 4, 2000
- NEC Corporation
- Masatoshi Tokushima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method for forming electrodes on mesa structures of a semiconductor...
- Patent number 5,618,753
- Issue date Apr 8, 1997
- NEC Corporation
- Masatoshi Tokushima
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
GRATING STRUCTURE, AND MANUFACTURING METHOD OF GRATING COUPLER PROV...
- Publication number 20180128975
- Publication date May 10, 2018
- Photonics Electronics Technology Research Association
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Application
GRATING COUPLER WITH HIGH OPTICAL COUPLING EFFICIENCY FOR SMF
- Publication number 20180074264
- Publication date Mar 15, 2018
- NEC Corporation
- Masatoshi TOKUSHIMA
- G02 - OPTICS
Information Patent Application
OPTICAL MEASUREMENT ELEMENT FOR ALIGNMENT IN WAFER-LEVEL TESTING AN...
- Publication number 20180010906
- Publication date Jan 11, 2018
- NEC Corporation
- Masatoshi TOKUSHIMA
- G01 - MEASURING TESTING
Information Patent Application
LIGHT RECEIVING ELEMENT
- Publication number 20170345952
- Publication date Nov 30, 2017
- Photonics Electronics Technology Research Association
- Kenichiro Yashiki
- G02 - OPTICS
Information Patent Application
OPTICAL CIRCUIT
- Publication number 20160054529
- Publication date Feb 25, 2016
- Photonics Electronics Technology Research Association
- Kenichiro Yashiki
- G02 - OPTICS
Information Patent Application
OPTICAL CONVERSION ELEMENT AND OPTICAL CONVERSION ELEMENT MANUFACTU...
- Publication number 20130188910
- Publication date Jul 25, 2013
- NEC Corporation
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Application
OPTICAL CONTROL DEVICE
- Publication number 20120195565
- Publication date Aug 2, 2012
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Application
WAVELENGTH FILTER
- Publication number 20110293217
- Publication date Dec 1, 2011
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Application
OPTICAL SWITCH
- Publication number 20110255826
- Publication date Oct 20, 2011
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Application
OPTICAL WAVEGUIDE
- Publication number 20110008009
- Publication date Jan 13, 2011
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Application
OPTICAL SWITCH AND MANUFACTURING METHOD THEREOF
- Publication number 20110008000
- Publication date Jan 13, 2011
- NEC Corporation
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Application
OPTICAL SWITCH AND METHOD OF MANUFACTURING THE SAME
- Publication number 20110002581
- Publication date Jan 6, 2011
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Application
PHOTONIC CRYSTAL ELEMENT
- Publication number 20100278487
- Publication date Nov 4, 2010
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Application
WAVEGUIDE COUPLING STRUCTURE
- Publication number 20100226609
- Publication date Sep 9, 2010
- NEC Corporation
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Application
OPTICAL CONVERTER AND METHOD FOR MANUFACTURING THE SAME
- Publication number 20100067846
- Publication date Mar 18, 2010
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Application
OPTICAL CONTROL DEVICE
- Publication number 20100014821
- Publication date Jan 21, 2010
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Application
POLARIZATION ROTATOR AND METHOD FOR MANUFACTURING THE SAME
- Publication number 20100002989
- Publication date Jan 7, 2010
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Application
Structure of photonic crystal
- Publication number 20060104586
- Publication date May 18, 2006
- NEC Corporation
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Application
Optical switch having photonic crystal structure
- Publication number 20050249455
- Publication date Nov 10, 2005
- NEC Corporation
- Masayuki Shirane
- G02 - OPTICS
Information Patent Application
Microchip, method of manufacturing microchip, and method of detecti...
- Publication number 20050175273
- Publication date Aug 11, 2005
- Kazuhiro Iida
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Optical wavelength-demultiplexer with an improved optical lens
- Publication number 20030035227
- Publication date Feb 20, 2003
- Masatoshi Tokushima
- G02 - OPTICS
Information Patent Application
Waveguide
- Publication number 20020191933
- Publication date Dec 19, 2002
- NEC Corporation
- Masatoshi Tokushima
- B82 - NANO-TECHNOLOGY
Information Patent Application
Method of exposing a lattice pattern onto a photo-resist film
- Publication number 20020172901
- Publication date Nov 21, 2002
- NEC Corporation
- Masatoshi Tokushima
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Optical switch having photonic crystal structure
- Publication number 20020146196
- Publication date Oct 10, 2002
- NEC Corporation
- Masayuki Shirane
- B82 - NANO-TECHNOLOGY
Information Patent Application
Photonic crystal and its fabrication
- Publication number 20020051275
- Publication date May 2, 2002
- Masatoshi Tokushima
- B82 - NANO-TECHNOLOGY

Masatoshi Tokushima

Person

Patents Grantslast 30 patents

Photodetector having one-dimensional grating structure

Optical measurement element for alignment in wafer-level testing an...

Grating structure, and manufacturing method of grating coupler prov...

Optical circuit

Optical conversion element and optical conversion element manufactu...

Wavelength filter

Optical control device

Optical switch

Optical switch and manufacturing method thereof

Optical waveguide

Photonic crystal element

Optical control device

Optical converter

Polarization rotator and method for manufacturing the same

Waveguide coupling structure

Optical switch having photonic crystal structure

Structure of photonic crystal

Microchip, method of manufacturing microchip, and method of detecti...

Optical switch having photonic crystal structure

Waveguide comprising a connection of a photonic-crystal line-defect...

Optical wavelength-demultiplexer with an improved optical lens

Method of exposing a lattice pattern onto a photo-resist film

Photonic crystal and its fabrication

Photonic crystal

Apparatus for making exhaust gas non-toxic

Method of dry etching and apparatus for making exhaust gas non-toxic

Metal-semiconductor junction fet

Method for forming electrodes on mesa structures of a semiconductor...

Patents Applicationslast 30 patents

GRATING STRUCTURE, AND MANUFACTURING METHOD OF GRATING COUPLER PROV...

GRATING COUPLER WITH HIGH OPTICAL COUPLING EFFICIENCY FOR SMF

OPTICAL MEASUREMENT ELEMENT FOR ALIGNMENT IN WAFER-LEVEL TESTING AN...

LIGHT RECEIVING ELEMENT

OPTICAL CIRCUIT

OPTICAL CONVERSION ELEMENT AND OPTICAL CONVERSION ELEMENT MANUFACTU...

OPTICAL CONTROL DEVICE

WAVELENGTH FILTER

OPTICAL SWITCH

OPTICAL WAVEGUIDE

OPTICAL SWITCH AND MANUFACTURING METHOD THEREOF

OPTICAL SWITCH AND METHOD OF MANUFACTURING THE SAME

PHOTONIC CRYSTAL ELEMENT

WAVEGUIDE COUPLING STRUCTURE

OPTICAL CONVERTER AND METHOD FOR MANUFACTURING THE SAME

OPTICAL CONTROL DEVICE

POLARIZATION ROTATOR AND METHOD FOR MANUFACTURING THE SAME

Structure of photonic crystal

Optical switch having photonic crystal structure

Microchip, method of manufacturing microchip, and method of detecti...

Optical wavelength-demultiplexer with an improved optical lens

Waveguide

Method of exposing a lattice pattern onto a photo-resist film

Optical switch having photonic crystal structure

Photonic crystal and its fabrication